A ache jaw can be many reasons, trauma to the bone and other variables. Its difficult to give a direct answer with out more information however I will suggest this.
Sinus - the sinus cavities are located near the jaw so when inflamed do to cold or other reasons this will cause your jaw to hurt. Benedryl should relieve some discomfort and of course always see a medical doctor.
Sinus - the sinus cavities are located near the jaw so when inflamed do to cold or other reasons this will cause your jaw to hurt. Benedryl should relieve some discomfort and of course always see a medical doctor.